Type-writing machine.



' vG. 'H'. SMITH.

TYPE WRITING MACHINE'. APPLOATIN FILED JAlme, 1906.' r latented Febg 9, 1909.

z SHEETS-ammi.

DDf-C WITNEEE INVENTDR H15 AT TDRNEY TTUHNEY4 G. H. SMITH. TYPE WRITING MACHINE.

APPLICATION FILED JAN. 26, 1906.

w/ITNEEEEE mais? HFGE.

' OF FORllST HILL,

new JERSEY, ASSGNOR TO UNION TYPEWRITER i', Ol JERSEE OllY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TYEJWRTING- MAHNE.

Specification i Letters Patent.

Patented Feb. 9, 1909.

epp'leaten .august 2"?, lem), Serial No. 23,142. Divided and, this application flied January 26,. 1906.

Serial No. 297S63.

a it Imay concern:

that Choline Saura, nl resident of Esso); and

` proveniente in ypeWritwhich, the following is a ,tion relates to typewriting nias and has Afor iis ohjeet to provide iml line spacing mechanism for such ation Consists in certain Comich vill fully so 'forth herein irly pointed out in 'the elaims.

ion is a division of my applirs APatent for improvements a, Serial No. 23,1411., filed Aw tvonipanying drawings, .Figure l. f- View of the upper part ol a typeinaeliine liayf my improvements.

's a det il verl ni, 'the View 1seing e rifers el' li. Ll, and loolii'iig in :aid figure. Fig. 3 is a the same wiin parts is planwiew of a niaeiune having my a View similar to parts in a different is an irregular vertical illustrating the mode of shilt '7 is a fragmentary oi' portion of the line sp: t

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, ning rim-whine to which l have v intention anp iod, has a top plato hy posts nu; and posts di and M said top plate, support rails on uf'hieli Carriage il adapted i L and i'oith aeross the machine,

hy .rollo 'l1 and lll, ln such g and orth motion the carriage may he D 'it attained hy a spring drum and Controlled liv an eseapemor.t nii-afn. sin in the usual suitable nia-nner. he carriage B a reetarffular frame, the end Ameli are to red with depressions oit the platen D ich the sh rote un and draai, tor nop/sr the types losing on anil adapted to strike the platen al seetional yiew of l approximately on the front face thereof. The shaft D1 of the vplaten is journaled in hearings formed in a platen frame E having longitudinal connecting 1oars E1 at the rear and E2 at the bottom. This platen frame is pivotally connected at the lower portion, as at F11, thereoiA to crank arms F1 that are secured to a rook shaft F2 mounted to turn in hearings in the end plates of the carriage B; whereas the upper portion of said platen frame is pivoted at FZ to the forward ends ol links F, the other ends of which are pivoted at B8 to the carriage, the crank arms 1 and the links l" together constituting in 'fleet parallel links on which the platen frame is adapted to he shifted up and down to change the printing position. The shifting mechanism is not fully shown. herein as it constitutes no part of the present invention, out it inoludps a shift rail G1 which supports a roller E3 journaled in the lower longitudinal bar of' the platen frame. Said shil rail G1 is mounted onthe ends of crank arms G secured to a-roek shaft Gx journaled in -lugs rising from the top plate A1, as shown in Fig. The platen frame is normally held by gravity in its lower position, in which position it rests on adjustable screws E4 threaded into lugs projecting from the carriage B. The shaft (1X may be oseillated to raise the platen to upper ease position by hand operated ineans which are not shown but which are connected to an arm G2 depending from said-shaft GX.

To the shalt D1 of the platen is attached the usual ratchet or line spacing wheel D2 and this is actuated to give the desired single or double line spacing by means ,of mechanism which will now he described.

t the right-hand end of the carriage a roel; shalt L terminating in a downwardly extending :linger piece L1, is pivoted in lugs L11 projecting from said carriage B. l sprii'ig L2, coiled about said roel; theft, serves to restore it to normal position alter it has been roel-:od hy the finger piece L1. At its rear end the rock shaft has ixed thereto an upwardly extending crank arm L3 provided with a small anti-friction roller L1. On a bracket L5 connected to the platen frame E is mounted a bell crank or angular lever L provided with a depending vertical stud L7 to engage the anti-frietion roller L4 above described. The lever 'L is Vso los

' wardly and in the same metal.

returned to normal position by a spring L coiled about the pivot of the lever, and-its motion is limited in either direction by lu s L connected to the platen frame E. T e other arm of the lever L carries a post L*V connected thereto by a vertical pivot, and the rear end of a horizontally movable dog L' is connected to said ost'L -by `a horizontal pivot L". It wil Vbe observed that if the shaft L be oscillated by the linger piece L,.the dog L. willbe moved rearlane as the linef spacing ratchet wheel and) will engagel one o the teeth of the ratchet D land rm art a line space feed to the platen; The og 'Ls has a shoulder LIl (Fig. 3) and a pin L" which e1 age the o posite sides ofthe tail of a aw L whic is independent of the dog 4.and its actuating means, 'and is pivoted at Lx to the platen frame l(see Fig. 2). The eng 'r nose of said pawl Lu engages the teet o the ratchet Wheel D-2 and serves to lock'the vsame against movementin either direction when the dog L com pletes its feed stroke and thus reve1-ts overthrow of the platen when the line spaci1 mechanism` is viole1.tly actuated; and this is true. whether the line spacir g dog be employed for half spacii .g or for full spacing,- as wil hereinafter more clcarly-appear. t will thus be seen .that the locking pawl ex-4 tends i;.to the ath of the line spacing dog and is positivel y moved thereby to e'.`ecta lockiz. of the platen agai: st overthrow of the p aten or a'r .st rotation in either. direction 'when t ie dog 'has about completed its li:.e s aciig movement.

To the rear o the ratchet wheel D is an independentl actuated hand operated angular lever Lu t iat is pivoted to ears extending forwardly from the latenframe and the u per' part o f which orms a guide L for t .e space dog, and to\the lower part of which is connected an' elastic or resilient brake-shoe L" that is preferably made of a strip of sheet In the upper part of this lever is mounted a roller or d'etent L which in the normal position of the lever Llz is adapted to engage the ratchet and to hold it against accidental displacement lbut so that the platen may be turned one or more line space distances in either direction. This lever is under tension of a spring L15 attached to the laten frame E at one end and bearing at its Free end against the lever and exerting a pressure thereon that tends to maintain the detent roller in engagement with the ratchet wheel tact therewith, The 460 and to maintain the brake spring out of conide Lc on the lever' L" has a cross-bar or ocking abutment Ld 'thatisadapted to eoperate with a transverse locking notch L20 in the upperedge of the line space dog where it extends through the guide so that when the Aoperator desires 'dog and the guide L will have been eected -and which is sufiicient to bring thelocking notch Lzo into register with the cross-bar Ld of the guideland the cross-bar will be seated in said notchand will bear against the forwardend thereof, las shown in Fig. 5,' thus maintaini the parts in the positions to which thelylave been moved, with the brake slight relative movement of the line space vspring bearing against the teeth of 'thel line spacrng wheel and the vdetent roller maintained away therefrom. At the same time the line spacing mechanism i's locked against -movement and the platen is free to be rotated by either finger wheel of the platen to the desired extent, and it will be retained in the position to which it is rotated by thebrake spring-L". By locking the linespacing mechanism out offactuation when the brake is applied for diz'erential spacing, the hand lever Ll may continue to be used to restore the carriage to the right without, however at this time actuating the line spacing mec .anism. A slightdownward pressure exerted uponzthe forward or free end of the line s acing dog will release the parts from their ocked positions and they will be rev stored to their normal ositions with the detent roller bearing on tre ratchet wheel, the brake 'springv moved away therefrom, the `spacing dog in a position to coperate with t e ratchet wheel and the line spacing mechanism as a whole free to be actuated. While I prefer to employ a locking notch in the dog to coperate wrthrthe guide in' the manner specified, it should be understood that any suitable means may be employed for this purpose. l

It will be seen that the actuation of either the locking lever L1x or the detent-or braking lever L2 is entirely inde endent of the other,

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thus the movement of t re locking lever in no way afl'ects the det-ent lever, whereas when the braking lever isl moved to a position wherev the brake spring is applied,- an movement that may be transmitted to the o ckin'gr lever is insufficient to bring the nose thereof into lengagement with the' teeth of the ratchet wheel. p In the forward portion of the lever L there is journaled a short shaft D (Fig. 3)

'having fixed thereto la. cam L10-extending to write on lines or in spaces of a'blank orbeneath the line spacing dogL, which cam is adapted yto ,be turned into a lower'm or Mallet wl o (lfb farol;

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the detent is thrown out of co eration with.

the ratchet wheel and the bra (e is applied.

9. In a typewriting machine, the combination of a carriage, a platen, a line spacing ratchet wheel therefor, a line spacing device cooperating therewith, a hand lever for actuating said linespacing device and for moving the carriage from left to right, a detent that is adapted to cooperate with said line spacing wheel, a brake to retard the rotation of the platen, and means'for automatically .locking the hand lever against line spacing movement when the detent is thrown out of co eration with the ratchet wheel'and the -bralie is applied.

10, In a typewriting machine, the combilnation of a carriage, a platen, a line spacing ratchet wheel therefor, a cooperating line s acing dog, a pivoted spring-pressed lever that hasa guide in which said dog is adapted to vibrate, a brake anda detent carried. by said lever, a hand lever/that is connected to said line s acing dog /and which is effective to move t e carriage from left Ite right, and

means for throwing oii the detent, applying the brake and locking said lever against line fspacinv movement.

11. In a typewriting machine, the combination of a carriage, a platen frame, a platen, a line spacing ratchet wheel therefor, a cooperating pivoted line spacing dog, a hand lever therefor, and which is .likewise eilective to move the carriage from left to right, va s ring pressed angularv lever pivoted to the p aten frame, abralre and a detent carried by said angular lever, and means controlled by a movement of the line spacing dog for moving and maintaining the angular lever in such position that the detent will be thrown out of cooperation with the teeth of the ratchet wheel, the brake will be applied to retardv the rotation of the Aplaten and the hand lever will be locked against line spacing movement.

12. In a typewriting machine, the combination with a platen. and its attached line-v s acing ratchet,` oi a dog adapted to engage tiierewith, a bell-crank connecting with said dog and having a downwardly extending stud connecting with its free arm, a rocli shaft having an arm adapted to engage said stud, and a thumb lever at its opposite forward end, whereby the line spacer may he operated .by th'e thumb of the operator "as the carriage is moved to the right.

` 13. In a ty ewriting machine, theA combination of a p aten, an actuating device for imparting stcp-by-step line spacing movements to the platen, a resilient brake which is normally out of braking action and means for 'applying said brake to theA platen by a movement of said actuating device.

14. In a typewriting machine, the comhiw nation of a platen, a line spacing ratchet wheel connected-thereto, line spacing mech anism cooperating with said ratchet wheel, locking pawl which is normally out oi en-l gagement but which cooperates with said ratchet wheel, means controlled by the movement Iof t e line spacing mechanism for torcing the locking pawl b a positive pressure into enga/gement with t e ratchet wheel, and a resilient brake which is normally outoi braking engagement and which is forced into such engagement by the movement of a part oi the line spacing mechanism. n

15. .In a typewriting machine, the ccinhi nation of a platen, a line spacing ratchet wheel connected thereto, an actuating device cooperating with said ratchet wheel to inn art step-by-ste. movements thereto, a bear lng roller whic normally' hears upon the teeth ci said ratchet wheel, means'for moving said. roller away from the-teeth by a movement of said actuating device, and a re silient hralie which is normally ont of braking engagement and which is automatically forced into such engagement when the said roller is forced away from. the teeth of the ratchet wheel.

16. In a typewriting machine, the combim nation of a platen, a line spacing ratchet wheel connected thereto, line spacing mech anism cooperating with said ratchet wheel, va locking pawl which is normally out ci engagement but which cooperates with said. ratchet wheel, means controlled by the move ment of the line spacing mechanism for foro ing the locking pawl by a positive pressure into engagement with the ratchet wheel, and4 i a resilient brake which is normally ont or' braking engagement and which is forced into such engagement by a movement oi a part oi2 the line spacing mechanism.

17. In a typewritingmachine, the combination of .a platen, a line spacing ratchet wheel connected thereto, line spacing mccin anism cooperating with said ratchet wheel, an angular lever carrying a hearing roller on one armthereof and a resilient brake on the other arm thereof, said brake being normally out oic engagement and the bearing roller norw mally in engagement with the teeth of the ratchet wheel, and means controlled by said line spacing mechanism for effecting a move ment oi said angular lever to withdraw the roller from engagement and to force the brake into engagement.

18. In a typewriting machine, the combination with a carriage and a platen carried thereby and shiftahle for upper and lower case printing, of a ratchet wheel for said platen; a dog for ocrating said ratchet wheel; means situate behind 'said ratchet wheel for o erating said dog; and a recit shaft eaten ing from iront to rear of said carriage for loperating said dog operating means in either of the positions to which said platen is shiitable.

19. In a typewriting machine, the' combination of a carriage; a platen frame and platen mounted on said carriage and shiftable for upper and lower case printing; a ratchet wheel connected tosaid platen; a line space dog for actuating said ratchet Wheel; and a rock shaft journaled in said carriage and extending from iront to rearthcreoi` and arranged to operate said line space dog, whether the platen is in upper o1: lower case position. I

` 20. 4In a typewriting mach'ine, the combination of a platen, a line spacing wheel,l a line spacin pawl, a rock shaft havin f a crank arm t at carries an anti-,friction roler, and an angular` lever with which said antifriction roller cooperates and which coperates with said pawl. ,i

21. In a ty ewriting machine4v the combination ol a p aten, a line spacing wheel, a

yline spacing pawl, a rock-shalt having a crank arm that carries an anti-friction roller, said rock shaft extending fore and aft of the machine, an angular lever with which said anti-friction roller coperates and which cooperates with said pawl, and a linger piece on said rock-shaft which transmits line spacing movements to the parts by a swinging movement of the linger piece from left to right, whereby a singlemiovement` of the finger piece is eective to line yspace and to' nove the carriage to the right to begin a new 22. In a typewriting machine, the combination of a platen, a vertically movable platen frame, a carriage, a line spacing ratchet wheel connected with the platen, a line spacing pawl, an angular lever for actuating said pawl, a hand actuated rock-shaft, and a sliding connection between -said rockshaft and angular lever.

23. In a typewriting machine, the combi# nation ol' a platen, a vertically movable laten frame, a carriage, a line spacing ratchet wheel connected with the platen, a line' spacingpawl, a lever coperating therevnation of a with, and a rock-shaft carried by the car-- .riage and having a crank arm which carries an anti-friction roller, said anti-friction yroller cooperating with said lever.

24. In a typewriting machine, the combi nation of a carriage, a platen, a line spacing wheel connected therewith, a line spacing ,pawl that moves lore and ai't of the machine 'in` the same plane as the line spacing wheel, an angular lever pivoted to the carriage. and to which said pawl is pivoted, a rock shaft that extends foreand aft of the machine and is mounted yin a bearing on the carriage, connections'from said rock shaitto said angular llever, and a linger piece. on the rock shaft and which effects a line spacing movement ol the pawl by a swinging movement oi the finger piece from left to right, whereby a single movement of the 'finger piece will et feet a line spacing of thel platen and a move nient ol' the carriage to the right to begin a .f

new line of writing. y

25. In a typewriting machine, the combiplaten, a line spacing ratchet wheel connected. therewith, a line spacing pawl that coperates with said ratchet wheel for actuating said wheel, a finger piece 'ier ac tuating said rock shalt, a crank arm on rock shaft, a lever actuated by said crank arm, a roller bearing between said crank arm and lever,l and operative connections between saidlever and line spacing pawi;

- 26. In a typewriting machinathe com iination oi a platen, a line spacing wheel nected therewith, a line spacing pawl, a reci;

E. M. WELLS, M. EVHANNWEBER.

. shaft that extends fore and ait of the ma l- 

